Cylinder cock



June 15, 1937. I LIGHT ET AL 2,083,610

CYLINDER COCK FiledvSept. 11, 1935 l N VEN TORS.

Patented June 15, 193 7 UNiTED STATES PATENT OFFICE CYLINDER COCK Application September 1 Claim.

Our invention relates to cylinder cocks of the type in which a chamber casing is attached to the end of a locomotive cylinder to serve as a receptacle for condensed water escaping from the cylinder and in which the chambered casing is provided with a valve controlled outlet port for venting it and with means for actuating the valve to open the port when conditions occur which make this advisable. It is usual to pro- 10 vide cylinder cocks with valve actuating means normally holding and returning the valve to seated position on the outlet port but adapted to open the valve when the pressure in the cylinder cock casing exceeds a determined amount. A good example of such a construction will be found in the McLain Patent, 1,958,091, granted May 8, 1934, and it will be noticed that in this patent a construction is shown in which the outlet port from the cylinder cock chamber communicates with a second chamber having alateral outlet for the discharge of water and steam received from the cylinder cock casing and in practical operation it has been found that in the construction illustrated in said patent and other more or less similar constructions, the fluids issuing from the cylinder cock casing issue from the lateral outlet with a downward inclination which is considered undesirable and the object of our invention is to so construct the chamber which receives the fluids from the cylinder cock casing and delivers them in a lateral direction that they will be delivered in an approximately horizontal direction and this we have effectively accomplished by providing in the chamber a deflecting partition ex.- tending from the side of the casing above its lateral outlet and dividing the chamber into upper and lower compartments connected together at the side of the chamber remote from the lateral outlet so that the fluids issuing from the cylinder cock chamber when the valve is open will be first directed by the partition toward the side of the receiving chamber remote from its lateral outlet and then pass into the lower compartment, flowing between its bottom portion and the partition in a horizontal direction to and through the lateral outlet. It will be understood that the deflecting partition should be so located and of such dimensions that the fluids issuing from the valve control port of the cylinder cock shall not be materially contracted in their cross-sectional area in passing through the receiving chamber.

By preference we form the upper compartment of the outlet chamber partly or wholly in the bottom closure of the cylinder cock casing, in 55 which closure the outlet port is formed, and form 11, 1935, Serial No. 40,080

the lower compartment, together with the lateral outlet and the deflecting partition, in an angularly adjustable cap piece secured to the end of the cylinder cock casing in such a manner that its lateral outlet can be directed in any desired direction.

For a better understanding of the invention, we refer to the drawing in which Figure 1 is a longitudinal section through a cylinder cock provided with our improvement and Figure 2 is a perspective view of the cap piece provided with the deflecting partition.

A is the casing of the cylinder cock having an inlet A which in practice is attached to the end of the locomotive cylinder and a chamber A adapted to receive any water condensed in the locomotive cylinder. The casing has an opening A at its bottom and is externally threaded, as indicated at A As shown, the opening A has inserted in it a closure B, having a flange B which abuts against the end of the casing and in which is formed an exhaust port B opening, as shown, into a chamber B as shown. A cap piece C having a flange C which lies in contact with the flange B of the closure B is clamped against the closure flange and the closure flange clamped against the end of the casing by means of a union nut D, screwing on the threaded end A of the casing. The cap piece C is formed with a lateral outlet, as indicated at C and above this lateral outlet the cap piece is formed with a deflecting partition, indicated at C which extends from the side of the cap piece above the lateral outlet toward the opposite side of the cap piece, forming in the cap piece a horizontal compartment C but leaving a connection C by which this compartment is placed in communication with the chamber B and the connection. between them should be such as to permit the flow of fluid issuing from the port l3 without material crosssectional contraction and this, of course, is also true as to the area of the lateral outlet C E indicates a slide valve moving on a seat B surrounding the port B and, as shown, the cylinder cock casing has extending into it a cylinder F, the outer end F of which is intended to be connected to a locomotive boiler or other source of high pressure fluid and the inner end of which opens freely into the chamber A Located in the cylinder F is a piston G having a stem G which extends into the chamber A and is connected to actuate the slide valve E so that when the piston moves outward the valve is open and when it moves inward the valve is closed. The inward stroke of the piston and the valve closing piston is forced outward, its

position of its stem is eifected by the abutment of the end of the stem against a fixed shoulder H. I indicates a spring acting against the end of the piston rod and serving to operate the rod and piston outward to open the valve when, pressure is cut off from the outer end of the cylinder.

The general construction and mode of operation of the apparatus shown in the drawing is similar to that shown and described in the McLain Patent 1,958,091, and the general construction and mode of application of the angularly adjustable cap piece C is similar to that described in our pending application, Serial Number 244, filed J anuary 3, 1935, with the exception of the provision of the deflector partition C which is provided for the purpose of so deflecting and directing fluids issuing through the port B that they will issue from the lateral outlet C in an approximately horizontal direction.

In operation, the outer end of the cylinder F is connected with the boiler or other source of high pressure which, acting against the piston G, forces it inward until its stem G abuts against the stop H in which position the valve E closes port B The inner end of the piston is exposed to whatever pressure exists in the chamber A and this chamber has at all times the pressure of the connected end of the locomotive cylinder which, of course, varies from zero to a very high pressure and whenever the pressure on the inner end of the piston exceeds the boiler pressure acting against its outer end, which is liable to occur when water accumulates in the end of the locomotive cylinder and fills the chamber A the control valve E opened and the discharge permitted through such interval of time as the valve remains open which, of course, is very brief. The water and steam issuing from the chamber A passes into the chamber made up of the upper and lower compartments separated by the deflecting partition C the upper compartment being, as shown, mainly constituted of the chamber B and the lower compartment being that indicated at C and these compartments being in communication through the passage C and this deflection of the fluids issuing from the casing results in their being delivered through the lateral outlet C in an approximately horizontal direction and when the angularly adjustable cap piece is used the issuing fluids can, of course, be directed laterally in any desired direction.

Having now described our invention, what we claim as new and desire to secure by Letters Patent, is:

In a cylinder cock comprising a casing adapted to be secured to a locomotive cylinder and chambered to receive fluids from said cylinder, a valve controlled outlet port from said chamber and means for actuating the valve to open the outlet port and vent the cylinder cock casing, the combination therewith of an angularly adjustable cap piece forming with the discharge end of the cylinder cook a chamber to receive fluids discharged therefrom, said cap piece having a lateral discharge opening and a deflecting partition extending from the side of the cap piece above its lateral outlet toward but not to the opposite side of the cap piece and dividing the chamber formed between the cap piece and the end of the cylinder cock into upper and lower chambers connected together at the side of the chamber remote from the lateral opening formed in the cap piece.

RALPH A. LIGHT. JOSEPH W. PRICE, JR. 

